stares



No. 616,985. Patented lan. 3, |899.

N. U. STARKS.

CULTIVATOR.

(Application led May 2.75, 139B.) (No Model.) 3 Sheets-Sheet I.

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No. 6|6,985Y Patented Jan. 3`, |899. N. 0., STABKS.

CULTFVTUR.

(Application med May 25, 1898.) I

3 Sheets--Sheet 2.

- Patented Ian.' 3, |899. N. 0. STARKS.

GU LTIVATOB.

(Application led may 25, 189B.)

(No Model.)

s! Sheets-Sheet 3.

NITSED STATESv PATENT OFFICE'.

NILS O. STARKS, VOF MADISON, WISCONSIN, ASSIGNOR TO TI-IE FULLER daJOHNSON MANUFACTURING COMPANY, OF SAME PLACE.

CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 616,985, dated January3, 1899.

Application tiled May 25, 1898. Serial No. 681,667. (No model.)

To all whom it may concern.-

Be it known that I, NILs O. STARKS, a citizen of the United States,residing at Madison, in the county of Dane and State of Wisconsin, haveinvented certain new and usefulImprovements in Cultivators, of which thefollowing is a specification.

My present invention relates to wheeled cultivators, the advantages andconstruction of which will be hereinafter set forth, reference being hadto the annexed drawings, wherein- Figure lis a top plan view of thecultivator; Fig. 2, a side elevation, the beam and shovels beingelevated; Fig. 3, a similar View, the beam being depressed; Fig. 4, adetail view of one of the shovels, and Fig. 5 a detail view 'of aportion of the machine.

One object of the present invention is t provide an improvedconstruction of the equalizer, whereby the draft for each horse is madethe same and there is no downpull on the end of the beam.

Another object is to provide spring means whereby the gangs can beadjusted to carry at any desired point when the shovels are in theground and at the saine time to lift them when they are to be carried,as when turning or going from one field to another, and to hold themagainst lateral or swinging movement when thus elevated.

The invention also has for its further object an improved constructionfor mounting the shovels upon the beams.

Referring to the drawings, A denotes an arched axle having suitablewheels B mounted thereon.

O indicates the pole, connected to the axle by suitable braces D.

Secured upon each of the upright members E of the axles are castings Fand G, in which are j ournaled uprights Il, each upright being formedwith a rearwardly-extending arm I at its upper end and with an arm J atits lower end, which stands at substantially right angles to the upperarm I, saidlower arms J extending out in line with the axle, but at adistance above the lower horizontal members thereof. In otherwords, theuprights H and the members I and J form a double crank,

with the arms or members offset at an angle of ninety degrees v to eachother. The rear ends of the arms I are pivotally connected to each otherby a link or rod K, and from the ends of each of the arms J thereextends forward a draft rod or bar L, carrying the singletrees M attheir forward ends. From these connections it will be seen that as onedraftbar moves back the other must of necessity move forward to the samedegree, or vice versa, and this without affecting the direct forwardmovement of the machine.

Intermediate the wheels and the upright members E there is pivoted uponeach of the horizontal members of the axle a casting N, and to thiscasting is swiveled a beam O, through a suit-able connection P, thearrangement of parts being such that the beam may swing sidewise andalso be raised and lowered asl desired. In the form illustrated each ofthe beams is formed of two rearwardly-diverging members,the lower endsof which are each provided with shovels Q, mounted in a manner whichwill be presently set forth.

Pivoted upon a stud R, extending out from the casting F, is a bell-cranklever, one arm S being provided with a hooked end engaging with one endof a rod T, the opposite end of which is secured to the beam. To theopposite end or arm U of the lever there is attached a link V, to whichis connected a coiled spring IV, the lower end of the spring beingadjustably secured to an arm X, extending out from the axle. Mounted inthe arm U of the bell-crank lever is an adjustable bar a, provided witha rounded head b, which bears directly against the link V. By extendingthe bar forward the linkV is elevated or brought nearer the horizontal,whereby greater leverage is obtained by the spring, and consequentlyless lifting action need be applied to the handles of the beams toelevate them. By adjusting the bar a in or out the elevation at whichthe beams will normally stand while in working position may be regulatedas desired. The parts may be so adjusted and regulated that the shovelswill work to the desired depth; but should it be desired to elevate themonly a slight upward pressure or pull need be exerted on the han- ICOdles, when the spring will elevate them to their highest position andhold them there. To assist in maintaining the beams in their elevatedposition, a forked arm c is formed upon the lower portion of thebell-crank lever, the

rod T passing in between the forks d thereof, as indicated in Fig. 2.This construction not only serves to lilnit and determine the upwardmovement of the beams, but it also prevents them vfrom swingingsidewise-a point of material advantage.

Each of the shovels Q is adj ustably secured upon an elbow-lever c,which is pivoted to the lower end of the beam, and to the.rearwardly-extending arm f of said lever is pivoted an arm g. Said armg is provided with a hook 7L at its upper end, the hooked portionextending through an opening formed in an arm t'. 'This latter arm ispivoted to said arm g at j, while its upper end is likewise connected toa casting it, adj ustably secured upon the beam. Arm t' extends downbeyond the pivotal point j and carries a setscrew Z, which bearsdirectly against the rear face of arm or member g. A spring 'm isadjustably secured between a rearwardly-extending` portion of casting 7cand the hooked end h, the spring serving to keep the parts in theposition indicated in Figs. 2 and 3, or, in other words, keeping themembers g and i, which form a toggle, in their straightened position. Byadjusting the screw Z the relative position of the pivotal points of thetoggle may be changed, as desired, and the force necessary to move theparts against the spring determined to a nicety.

In Fig. 4 the shovel is illustrated as having contact with anobstruction, and by reason of the forward movement of the machine thetoggle brokem thus relieving the parts from any injurious or breakingstrains. Normally the spring will hold the shovel to its work and willreturn it to its properposition when the obstruction has been cleared.

Having thus described my invention, what I claim isl. In a cultivator orplow, the combination of an axle; two upright members journaled thereonand connected at their upper ends to turn in unison; bars extending outfrom the lower ends of the upright members in approximate alinement withthe axles; and draft-bars connected to the outer ends of said bars.

2. In a cultivator or plow, the combination of an axle; two uprightmembers journaled thereon; arms extending rearwardly from the upper endsof said members; a bar connecting the outer ends of said arms; barsextending out from the lower ends of said upright members in approximatealinement with the axle; and draft-bars connected to the outer ends ofsaid bars.

3. In a cultivator or plow, the combination of an arched axle; members Hjournaled to the upright portions of the axle and provided with arms Iand J a bar K connecting the arms I; and draft-bars extending forwardfrom the ends of arms J, substantially as described.

4. In a cultivator or plow, the combination of an axle; a beam pivotallyconnected thereto; an elbow-lever pivoted upon the upper part of saidaxle; a link T connecting the rear end of said elbow-lever and the beam;a spring `connected to the forward end of said lever and to a fixedportion of the plow and serving to raise the beam; and means independentof the spring for varying its leverage, whereby7 the beam may be held inany desired position.

5. In a cultivator or plow, the combination of an axle or support; abeam pivotally connected thereto; spring mechanism for holding the beamat any desired elevation and permitting a lateral movement thereof; anda forked arm c adapted, as the beam is raised, to swing out into linewith the beam-support and to embrace the same, thereby holding itagainst lateral movement.

G. In a cultivator or plow, the combination of an axle or support; abeam pivotally connected thereto; an elbow-lever pivoted upon the axle;a connection between the rearwardly-extending member of said lever andthe beam; a link V pivoted to the opposite arm of the lever; a bar amounted in the el bow-lever and bearing at its outer end against thelink; and a spring connected to the lower end of the link and a fixedportion of themachine.

7. In a cultivator or plow, the combination of an axle or support; abeam pivotally connected thereto; an elbow-lever pivoted upon the axle;a connection between the rearwardly-extending member of said lever andthe beam; alink V pivotally connected to the opposite arm of theelbow-lever; means for limiting the swinging movement of the link; and aspring connected with the lower end of the link and a fixed portion ofthe machine.

8. In a cultivator or plow, the combination of an axle or support; abeam pivotally connected thereto; an elbow-leverpivoted upon the axle; aconnection between the rearwardly-extending arm of said lever `and thebeam; a link V connected to the opposite arm of the lever; means forvarying or adjusting the position of the link; a spring connected to thelower end of said link and a fixed portion of the machine; and a forkedarm c connected to the elbow-lever.

9. In a cultivator or plow, the combination of an arched axle; a beampivotally secured thereto; an elbow-lever pivotally mounted upon theupper portion of the axle; a rod T connecting the rearwardly-extendingarni'of the lever and the beam; a link V connected to the forward arm ofthe lever; a spring WV connected to the lower end of the link and at itslower end to an arm X extending out from the axle; and a forked arm cextending out IOO IIO

from the lever designed to receive and embrace rod T when the beam israised to its highest position.

l0. In a cultivator or plow, the combination of an arched axle; a beampivotally connected thereto; an elbow-lever pivotally mounted upon theupper portion of the axle; a rod T connecting the rearwardly-extendingarm of the lever and the beam; a link V connected to the forward arm ofthe lever; a rod ci adjustably mounted in said forward arm and providedwith a head b designed to bear against the link; a spring W connectingthe link to a fixed portion of the frame;and a forked arm c extendingout from the lever designed to receive and embrace rod T when the beamis raised to its highest position.

ll. In combination with a beam; an elbowlever pivoted thereto at itslower end; a shovel carried by the lower arm of said lever; a castingsecured upon the beam above the lever; a toggle connection between saidcasting and the rearwardly-extending arm of the elbow-lever a springextending from the casting to a hooked end upon the upper end of thelower member of thetoggle; and a screw limiting the movement of thetoggle toward its straightened position.

l2. In combination vwith a beam; an elbowlever pivoted thereto at itslower end; a shovel carried by the lower arm of said lever; a casting 7csecured upon the beam above the lever; an arm g pivotally secured to therear arm of the lever, and provided with a hooked end h; an arm pivotedto the casting and provided with an opening through which hook h ispassed; a pivotal connection j between said arms g and i; and a screw Zmounted in the lower 'end of arm i and bearing upon arm g, substantiallyas described.

In witness whereof I hereunto set my hand in the presence of twowitnesses.

NILS O. STARKS. Witnesses:

W. R. BAGLEY, EDWARD F. APPLEBY.

